package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exceptions.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.lang3.ObjectUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {
@Autowired
private RedisTemplate<String,Object> redisTemplate;
@Autowired
private SystemUserService systemUserService;
    @Override
    public CaptchaVo getCaptcha() {
//        1.生成验证码图片以及正确验证码
        SpecCaptcha specCaptcha = new SpecCaptcha(130,48,4);
        specCaptcha.setCharType(SpecCaptcha.TYPE_DEFAULT);
//        2.将验证码储存到redis中
        String code = specCaptcha.text().toLowerCase();
        String key = RedisConstant.ADMIN_LOGIN_PREFIX+UUID.randomUUID().toString();
        redisTemplate.opsForValue().set(key,code,RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC,TimeUnit.SECONDS);
//        3.将图片和key存到Vo返回
        String image = specCaptcha.toBase64();
        CaptchaVo captchaVo = new CaptchaVo(image,key);
        return captchaVo;
    }

    @Override
    public String login(LoginVo loginVo) {
   if(ObjectUtils.isEmpty(loginVo.getCaptchaCode())){
      throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
   }
        String redisCode =(String) redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if(ObjectUtils.isEmpty(redisCode)){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        if(!redisCode.equalsIgnoreCase(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        LambdaQueryWrapper<SystemUser> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(SystemUser::getUsername,loginVo.getUsername());
        SystemUser systemUser = systemUserService.getOne(lambdaQueryWrapper);
        if(systemUser==null){
          throw  new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }
        if(!systemUser.getPassword().equals(DigestUtils.md5Hex(loginVo.getPassword()))){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }
        if(systemUser.getStatus()== BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }
        String token = JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());
        return token;
    }
    }
